140310409 has 2 divisors, whose sum is σ = 140310410. Its totient is φ = 140310408.

The previous prime is 140310397. The next prime is 140310427. The reversal of 140310409 is 904013041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128255625 + 12054784 = 11325^2 + 3472^2 .

It is a cyclic number.

It is not a de Polignac number, because 140310409 - 2²⁵ = 106755977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140310409.

It is not a weakly prime, because it can be changed into another prime (140310479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70155204 + 70155205.

It is an arithmetic number, because the mean of its divisors is an integer number (70155205).

Almost surely, 2^140310409 is an apocalyptic number.

It is an amenable number.

140310409 is a deficient number, since it is larger than the sum of its proper divisors (1).

140310409 is an equidigital number, since it uses as much as digits as its factorization.

140310409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 140310409 is about 11845.2694777282. The cubic root of 140310409 is about 519.6328880750.

The spelling of 140310409 in words is "one hundred forty million, three hundred ten thousand, four hundred nine".